Relaxor ferroelectric compositions for field induced ultrasonic
transducers
    14.
    发明授权
    Relaxor ferroelectric compositions for field induced ultrasonic transducers 失效
    用于场诱导超声换能器的放电铁电组合物

    公开(公告)号:US5759432A

    公开(公告)日:1998-06-02

    申请号:US663729

    申请日:1996-06-14

    CPC classification number: B06B1/06 C04B35/499 H01L41/187

    Abstract: A relaxor ferroelectric composition that has the components lead magnesium niobate, lead titanate, and lead magnesium tungstate. The components are preferably present in relative molar amounts of (1-x-y) lead magnesium niobate, (x) lead titanate, and (y) lead magnesium tungstate, where 0.11.ltoreq.x.ltoreq.0.13 and 0.01.ltoreq.y.ltoreq.0.03. Also disclosed is a tunable ultrasonic transducer made of a relaxor ferroelectric composition that has the components lead magnesium niobate, lead titanate, and lead magnesium tunstate. A method of making a relaxor ferroelectric material comprising the step of adding an effective amount of lead magnesium tungstate to a lead magnesium niobate-lead titanate composition is also disclosed.

    Abstract translation: 具有铅铌酸铅,钛酸铅和钨酸铅镁的组分的弛豫铁电组合物。 组分优选以(1-xy)铅铌酸铅,(x)钛酸铅和(y)钨酸铅镁的相对摩尔量存在,其中0.11≤x≤0.13和0.01 < /=0.03。 还公开了一种由弛豫铁电组合物制成的可调谐超声波换能器,其具有铌酸镁镁,钛酸铅和镁镁铅组分。 还公开了一种制备弛豫铁电材料的方法,其包括将有效量的钨酸铅镁添加到铅铌酸铅铅钛酸盐组合物的步骤。

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